Stag do running man
Grand Theft Auto V Guide

Location: Route 68, to the East of Fort Zancudo located in the Western part of the map.

The young man roped to a pole

You should notice a young man who has been tied to a pole at the road. As a result of the conversation you will learn that it is the effect of a stag party gone wild. Offer to help the man reach the church, where his wedding is scheduled, on time. At the same time, you should make sure that you are driving a fast car, because you will have to race against time (the time limit is 5 minutes).

The wedding limo

The first stop is one of the luxury estates in the North-Western part of Los Santos. After you get there, wait for the man to change and, in the meantime, get into the luxury wedding limo (Enus Super Diamond).

The Hookies Bar

The next stop is the Hookies bar (one of the purchase-able estates)at the highway in the Western part of the map. I recommend against playing as Trevor because he can bump here into bikers who will open fire at him and can murder the people in the car as a result.

The place where the event ends

The final destination is the church in Paleto Bay, i.e. in the Northern part of the map. After you get here, you will watch a funny cutscene and will learn, at the same time, that you may keep the limo.